CN100424504C - Magnetic particle flaw detection current control method and apparatus - Google Patents
Magnetic particle flaw detection current control method and apparatus Download PDFInfo
- Publication number
- CN100424504C CN100424504C CNB2005100947604A CN200510094760A CN100424504C CN 100424504 C CN100424504 C CN 100424504C CN B2005100947604 A CNB2005100947604 A CN B2005100947604A CN 200510094760 A CN200510094760 A CN 200510094760A CN 100424504 C CN100424504 C CN 100424504C
- Authority
- CN
- China
- Prior art keywords
- current
- plc
- magnetization
- output
- flaw detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a magnetic particle flaw detection current control method and a device thereof, which are characterized in that a programmable logic controller PLC of a silicon controlled triggering program which is organized according to the requirement of magnetic particle flaw detection technology is corresponding to the magnetization flaw detection direction number which is needed by detecting workpieces, and each magnetization direction is provided with a PLC analog input/ output module Hoare current sensor, phase shifting triggering module, a pair of antiparallel controlled silicon and magnetization current output transformer to form a close loop control circuit. Furthermore, magnetization current information is collected by the Hoare current sensor and input to the analog input module, the magnetization current information which is collected by the Hoare current sensor is compared with a setting value by the programmable logic controller PLC, and voltages which are output to the analog output module through differential value control an antiparallel silicon controlled flow angle through the phase shifting triggering module so as to complete closed loop regulation for the output current of the magnetization current output transformer.
Description
Technical field
The present invention relates to the control method and the device thereof of magnetic powder inspection technical field, particularly a kind of magnetic particle flaw detection current.
Background technology
At present, open loop approach is adopted in the control of general magnetic particle flaw detection current, as " nondestructive examination " bimonthly magazine calendar year 2001 the 4th periodical being entitled as of stepping on " CJW-2000I exchanges the development of magnaflux " literary composition, a kind of production method and device of magnetic powder inspection magnetization current disclosed.Power supply is given the power supply of magnetization current output transformer by the inverse parallel controllable silicon, and the inverse parallel controllable silicon is controlled by the phase shift trigger module, and the magnetization current that the magnetization current output transformer produces does not detect and feedback assembly.Its course of work is, after workpiece clamps, put waver SA2 in desired location (as circumferentially), put and fill demagnetization switch SA3 in magnetizing or the position of demagnetizing (as magnetizing), press play button SB1, then circumferentially magnetize, SB3 places demagnetization, then circumferentially decay demagnetization automatically, it fills/and the size of demagnetization current is by potentiometer RP1 control, SA2 placed when vertical, from controlling by potentiometer RP2 to size of current, fill/demagnetize conversion and work with circumferentially identical, if need resultant magnetization, then SA2 is placed recombination site, at this moment circumferential electrode, longitudinal coil has electric current to pass through simultaneously, can carry out resultant magnetization and demagnetization.In this magnaflux, the size of magnetization current is to set in advance by potentiometer RP1 or RP2, and its weak point is in the magnetic history, fills demagnetizing curve and can not carry out according to predefined ideal curve, work as workpiece or electrode simultaneously and cause abnomal conditions such as loose contact, can't point out automatically.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of control method and device thereof of magnetic particle flaw detection current are provided, it uses programmable logic controller (PLC) PLC and related device, realize the closed-loop control that controllable silicon triggers, guarantee electric current reliably working in the scope of magnetic powder inspection technique initialization and permission.Thereby can pass through when causing abnomal condition such as loose contact when workpiece or electrode undercurrent, this flaw detection state better controlled of overcurrent alarm operator very factor to the flaw detection influence.
Above-mentioned purpose of the present invention is realized by following technical scheme: the control method of magnetic particle flaw detection current, it is characterized in that to be provided with according to the programmable logic controller (PLC) PLC of the controllable silicon trigger of magnetic powder inspection technological requirement establishment and corresponding with the needed magnetization flaw detection of detected workpiece direction number, each direction of magnetization all is provided with: PLC analog quantity input/output module, Hall current sensor, the phase shift trigger module, a pair of inverse parallel controllable silicon, the magnetization current output transformer is formed close loop control circuit, gather magnetization current information by Hall current sensor and be input to the analog quantity load module, through programmable logic controller (PLC) PLC program the magnetization current information and the setting value of gathering compared, output to the voltage of analog output module by difference control, through phase shift trigger module control inverse parallel thyristor operating angle, with the input circuit of control magnetization current output transformer, finish closed loop adjustment to magnetization current output transformer output current;
In the programmable logic controller (PLC) PLC, corresponding with the needed magnetization flaw detection of detected workpiece direction number, each direction of magnetization all is provided with the program that comprises magnetic history and demagnetization process, works out flow process according to the following steps:
Magnetic history:
The first step: given current setting value and magnetizing time setting value;
Second step: the output current setting value through peripheral analog output module D/A conversion, through phase shift trigger module control inverse parallel thyristor operating angle, makes the magnetization current output transformer export corresponding electric current again;
The 3rd step: read through analog quantity load module A/D conversion, export corresponding electric current by the magnetization current output transformer of Hall current sensor induction;
The 4th step: calculate the poor of current setting value and read value, with last output valve and the output of this result of calculation sum;
The 5th step: whether judgement time arrives the setting value of magnetizing time, if do not change for the 3rd step to the time, if the time to output one shutoff value, controllable silicon is turn-offed;
The demagnetization process:
The first step: given current setting value;
Second step: the output current setting value through analog output module D/A conversion, through phase shift trigger module control inverse parallel thyristor operating angle, makes the magnetization current output transformer export corresponding electric current again;
The 3rd step: read through analog quantity load module A/D conversion, export corresponding electric current by the magnetization current output transformer of Hall current sensor induction;
The 4th step: calculate the poor of current setting value and read value, with last output valve and the output of this result of calculation sum;
The 5th step: repeated for the 4th a period of time in step, to reach magnetized effect;
The 6th step: given setting demagnetization time value;
The 7th step: the output of successively decreasing, until setting the demagnetization time then, the output of successively decreasing also arrives zero, exports a shutoff value, and controllable silicon is turn-offed.
For closed loop with the magnetized multichannel magnetization current of a plurality of directions output transformer output current, program in the programmable logic controller (PLC) PLC finishes that reading of corresponding multichannel come through analog quantity load module A/D conversion, magnetization current output transformer by the Hall current sensor induction is exported corresponding electric current, calculate the poor of current setting value and read value, with last output valve and the output of this result of calculation sum.Can adopt serial or mode such as parallel to work out on the program, as serially " reading---calculatings---output " being carried out on each road, modes such as "---calculating respectively---export respectively to read multichannel " perhaps concurrently.
Current setting value and time set value can be provided by two potentiometers respectively, and the relevant analog quantity of potentiometer is delivered to programmable logic controller (PLC) PLC through analog quantity load module A/D conversion; Current setting value and time set value also can be provided by computing machine, and computing machine is connected with programmable logic controller (PLC) PLC.
Be directed to the fluctuation of line voltage and cause output current fluctuation, be provided with the line voltage survey sensor, by tracking real-time regulated PLC internal parameter control to line voltage, the flaw detection size of current is write down in the real-time communication of coupled computer and PLC automatically, send warning message by computing machine, prompting operation person does respective handling to flaw detection workpiece or electrode etc. and does flaw detection again, realizes the intellectuality control of flaw detection electric current.Its compensation of power network voltage method is: in the program of magnetic history and demagnetization process, programmable logic controller (PLC) PLC reads and comes through analog quantity load module A/D conversion, when exporting corresponding current value by the magnetization current output transformer of Hall current sensor induction, read the line voltage value that the line voltage survey sensor comes, calculate the poor of the line voltage value of the stable normal value of line voltage with the line voltage survey sensor, this difference is joined among the programmable logic controller (PLC) PLC output valve.
Control device according to the magnetic particle flaw detection current of said method design is characterized in that including following hardware and constitutes:
(1), is provided with the programmable logic controller (PLC) PLC of controllable silicon trigger;
(2), with corresponding PLC analog quantity input of the needed magnetization flaw detection of detected workpiece direction number and output module;
(3), with the corresponding Hall current sensor of the needed magnetization flaw detection direction number of detected workpiece;
(4), with the corresponding phase shift trigger module of the needed magnetization flaw detection direction number of detected workpiece;
(5), corresponding with the needed magnetization of detected workpiece flaw detection direction number, the synchrotrans of power supply are provided for the phase shift trigger module;
(6), with the corresponding magnetization current output transformer of the needed magnetization flaw detection direction number of detected workpiece;
(7), corresponding with the needed magnetization of detected workpiece flaw detection direction number, be a pair of inverse parallel controllable silicon of magnetization current output transformer power supply;
(8), the magnetization load of magnetization current output transformer output terminal;
The hardware annexation: the output of magnetization current output transformer connects Hall current sensor, the output of Hall current sensor connects the analog quantity load module, its A/D conversion output meets programmable logic controller (PLC) PLC, programmable logic controller (PLC) PLC output connects analog output module, its D/A conversion output connects the phase shift trigger module, the output of phase shift trigger module connects the inverse parallel controllable silicon, the output of inverse parallel controllable silicon connects the input circuit of magnetization current output transformer, AC power meets programmable logic controller (PLC) PLC respectively, synchrotrans, the inverse parallel controllable silicon, the load that workpiece is produced magnetization is connected the output terminal of magnetization current output transformer.Programmable logic controller (PLC) PLC is provided with three switching value input ends, inserts magnetization, demagnetization, reset key switch respectively, is used to control its internal processes work; Be provided with a switching value output terminal, finish the break-make control to pilot relay, pilot relay is connected between the output terminal and inverse parallel silicon controlled control end of phase shift trigger module; A magnetic powder inspection magnetization current size setting potentiometer and a magnetic powder inspection magnetization current time set potentiometer are delivered to programmable logic controller (PLC) PLC through analog quantity load module A/D conversion respectively, are used to control the size setting and the setting of magnetic powder inspection magnetization current duration of magnetic powder inspection magnetization current.Between inverse parallel silicon controlled K, the G utmost point, be connected to the RC capacitance-resistance absorption circuit of a diode and a series connection.Also be provided with the line voltage survey sensor between AC power and the programmable logic controller (PLC) PLC.Computing machine also can be set be connected, be used for real-time communication, write down magnetic powder inspection magnetization current size and deadly condition automatically and report to the police with programmable logic controller (PLC) PLC.Described magnetization load is anchor clamps or coil, applies magnetic field in quilt flaw detection workpiece.
Advantage of the present invention and effect:
1), adopt closed-loop control, and follow the tracks of the voltage ripple of power network situation and regulate controlled variable automatically, realized that system power is in the magnetize reliable and stable output of state of big electric current.
2), the convenient magnetic powder inspection complete machine control figureization that realizes.
3), modular control circuit, reliability height, system maintenance more convenient and quicker.
4), digital control principle, the valve boundary of the electric current of being convenient to realize to detect a flaw is set, and makes things convenient for output alarm signal, guarantees electric current reliably working in the scope of magnetic powder inspection technique initialization and permission.Thereby can pass through when causing abnomal condition such as loose contact when workpiece or electrode undercurrent, this flaw detection state better controlled of overcurrent alarm operator very factor to the flaw detection influence.
5), silicon controlled K, G interpolar be connected to diode and RC capacitance-resistance absorption circuit, play protection and suppress false triggering and use.
Description of drawings
Fig. 1 is an electric functional-block diagram of the present invention;
Fig. 2 is a circuit diagram of the present invention;
Fig. 3 is the magnetization current curve map;
Fig. 4 is the demagnetization current curve;
Fig. 5 is the programmable logic controller (PLC) PLC program flow diagram that magnetizes;
Fig. 6 is a programmable logic controller (PLC) PLC demagnetization program flow diagram;
Fig. 7 adopts circumferential anchor clamps and longitudinal magnetization coil to move the flaw detection workpiece is applied the magnetic field synoptic diagram;
Embodiment
Among Fig. 1,1 is synchrotrans; 2 are the phase shift trigger module; 3 is a pair of inverse parallel controllable silicon; 4 is the magnetization current output transformer; 5 are the magnetization load; 7 is the grid ac voltage input end; 8 is the analog quantity load module; 9 is analog output module; 10 is Hall current sensor; 11 is the line voltage survey sensor; 12 is programmable logic controller (PLC) PLC;
Among Fig. 2 (with required week of detected workpiece, vertical two direction of magnetization be example), T
01, T
02Be respectively week, vertical synchrotrans that all, vertical phase shift trigger module is used; T
J0, T
J1Be respectively week, vertical phase shift trigger module; T
0, T
1Be respectively week, longitudinal magnetization electric current output transformer; T
A0, T
A1Be respectively current-output type week, vertical Hall current sensor, according to the 4-20mA current signal of the variation outputting standard of actual output current.K
01, K
02Be respectively week, vertical controllable silicon output control relay; VT1, VT2 are a pair of circumferential inverse parallel controllable silicon; VT3, VT4 are a pair of vertical inverse parallel controllable silicon; ⊙ is programmable logic controller (PLC) PLC; 1., 2. be respectively and be used for week, vertical analog quantity input/output module; W0, W1 are respectively magnetic magnetization current size and set potentiometer and time potentiometer; SB1, SB2, SB3 are respectively and start magnetization work button, start demagnetization work button and install reset key; F1 is that circumferential magnetization load (electrode holder), F2 are longitudinal magnetization load (coil).
Main components and parts are listed as follows among the figure:
Synchrotrans: 2 380V/18V 15W
Phase shift trigger module: 2 TRIAC-JKK
Hall current sensor: 2 TKC3000D
Magnetization current output transformer: 2 self-control D3000 types
Pilot relay: 2 MY2NJ
Resistance: 2 30 Ω/5W
Electric capacity: 2 0.01 ц F
Diode: 4 1N4007
PLC main frame: 1 TWDLMDA20DRT
Analog module: 2 TWDAMM3HT
Controllable silicon: 4 KP300
The triggering Control work is described as follows:
Circumferential controllable silicon VT1, VT2 receive electrical network A, B and go up mutually, because trigger current needs synchronously, circumferential phase shift trigger module provides the synchro source signal by 380 to 18V circumferential synchrotrans, and circumferentially the 18V alternating current input end on the trigger module is that the trigger current synchronizing signal also is the power input of phase shift trigger module simultaneously.Circumferentially the input end 380V of synchrotrans takes from A, the B phase of electrical network; In like manner vertical synchronizing signal is taken from B, the C phase of electrical network.The control input end of phase shift trigger module is CON, COM, and input signal is that direct current die mould scope is 0-5V.The phase shift trigger module makes the silicon controlled lead angle change by the variation of output voltage linearly, thus the electric current generation respective change of control magnetization current output transformer output.
The control of voltage is realized according to Automatic Program by programmable logic controller (PLC) PLC between CON, the COM, and specific implementation depends on analog quantity input, the output module of programmable logic controller (PLC) PLC.Usefulness is the analog module of dual input single channel output in the present embodiment.The input port of analog module is connected to respectively circumferentially, the output terminal of the current sensor of longitudinal magnetization electric current output transformer output terminal, gets the current signal that returns in real time.TA0, TA1 are two current-output type current sensors, according to the 4-20mA current signal of the variation outputting standard of actual output current.The output terminal of analog module connects respectively circumferentially, vertically the CON and the COM of phase shift trigger module hold.Silicon controlled K, G interpolar are connected to 1N4007 diode and RC capacitance-resistance absorption circuit, play protection and suppress false triggering usefulness.As installing the voltage correction-compensation additional, then to need line voltage survey sensor model can be WBV414a (being output as 4-20mA).
Two switching value output terminal Q2, the Q3 of programmable logic controller (PLC) PLC are connected respectively to the control end of week, vertical pilot relay K01, K02, week, vertical pilot relay K01, K02 are connected to respectively between week, vertical phase shift trigger module and week, the vertical inverse parallel silicon controlled control end, play the silicon controlled effect of thoroughly turn-offing in case of necessity.
For determining the algorithm of circuit triggers program according to external hardware and in conjunction with the programming language of programmable logic controller (PLC) PLC according to the magnetic powder inspection technological requirement after the systematic analysis, realize the controllable silicon triggering technique according to algorithm establishment relative program then.The total system control flow is:
Setting magnetic powder inspection magnetization current size and time, on the basis of given experience initial value:
The first step: by startup fill/the work button of demagnetization sends and fills/demagnetize signal and give programmable logic controller (PLC) PLC;
Second step: programmable logic controller (PLC) PLC sends signal, via analog module output, phase shift touch piece, the output of inverse parallel controllable silicon, thereby makes the output of magnetization current transformer produce the flaw detection exciting current;
The 3rd step: the flaw detection exciting current of current sensor measurement magnetization current transformer output, deliver to programmable logic controller (PLC) PLC via the analog module load module;
The 4th step: programmable logic controller (PLC) PLC calculates rreturn value and setting value difference, produces the value of proofreading and correct output control voltage;
The 5th step: forwarded for second step to.
So repeatedly up to the time that reaches setting.
The setting of electric current is regulated by computing machine or corresponding potentiometer, fill the demagnetization signal and imported by keyswitch, initial value by the program thread that actual tests obtains The whole control system is: will realize the control effect as Fig. 3,4 magnetization, demagnetization current curve according to the magnetization current value of setting and magnetizing time, demagnetization time.
When magnetization, in very short time, magnetization current be raised to setting value, keep certain hour then, in the time of setting, turn-off, reach magnetized effect.Setting value can be from the hundreds of ampere to thousands of amperes, and the magnetized time generally has only 1～3S.Emphasis here will be transferred to electric current a higher value exactly at short notice, and over-control can not occur, with electric current stable and shutoff after setting-up time arrives at set point, current fluctuation and over-control can not occur then.Realize good flaw detection effect, the current curve that the triggering controllable silicon is generated that will try one's best reaches or is approximate as Fig. 3,4 magnetization, demagnetization current curve.Among the present invention, magnetize and the electric current that demagnetizes is 1-3 second, electric current is hundred amp-kilo-ampere levels.
In the program design given circumferentially, longitudinal current sets word, magnetization, demagnetization time set word, internal magnetization, demagnetization start bit.Give an initial value according to the value of setting to programmable logic controller (PLC) PLC analog quantity output terminal, this initial value is to be calculated by setting value by the linear function that an experience is drafted, and the correlation parameter of function is then got by experiment.Allow electric current in a short time, be raised to a bigger value (but being lower than setting value again) and overshoot can not occur.By detecting the signal of input end, rreturn value is compared with input value again,, obtain one by processing again and regulate increment (F1=It/Is+F0 according to the difference between the two; Δ I=It*F1 in the formula; F1 is that adjustment factor, It are that difference, the Is of return signal and setting value is that setting value, F0 are that experience factor, Δ I are for regulating increment).Make electric current can satisfy the requirement of magnetization curve by such closed loop adjustment.And when needing demagnetization according to demagnetizing curve, only need with preceding half section as magnetic history, the second half section does following processing again and just can well realize demagnetization effectiveness.The output end value that basis provides after magnetization is finished, calculate the amount that demagnetization is regulated, its formula is: Δ I1=(Is-I0)/(Ts/T0), Δ I1 is that setting value (the magnetized maximal value of leading portion), I0 are that empirical value, Ts are regulating cycle for demagnetization setting-up time, T0 for demagnetization regulated quantity, Is in the formula.The aforementioned calculation formula is converted to actual programmable logic controller (PLC) PLC control program, comes consummating function by field experiment then, the magnetic powder inspection magnetization current control device of the programmable logic controller (PLC) PLC control of an intelligence is just finished.
Magnetization curve, the Is current setting value, according to the difference of different workpiece and magnetizing time, this setting value is different.Requirement according to existing general specification mainly is to ensure that energising can meet the demands at so such Surface field strength criterion of 2400A/m.The Ts magnetizing time, mainly be an appropriate time value choosing in order to ensure workpiece fully to magnetize generally about 1 ∽ 3s, specifically decide magnetization current and magnetizing time according to the sensitivity effect of actual standard test piece.Steep more good more in when magnetization for the curve of the rising of electric current, can in official hour, better magnetize like this workpiece.
Demagnetizing curve, the Is current setting value, Ts demagnetizes the time; Require electric current in the time of 1 ∽ 2s, will rise to setting value during demagnetization, the curve that rises is steep more good more, the then slow more good more time of demagnetizing of demagnetizing curve descending branch when demagnetization, the longer the better, but consider that demagnetization efficiency reaches the remanent magnetism when in fact detecting, the time promptly can't significantly be reduced remanent magnetism to certain hour.So the demagnetization time is generally at 5 ∽ 10s.
Among Fig. 7: 21,22 is magnetized two electrode holders of circumferentially switching on, and is connected to the output terminal of circumferential magnetization electric current output transformer; 23 is detected workpiece; 24 are the longitudinal magnetization coil, and coil connects the output terminal of longitudinal magnetization electric current output transformer.
Claims (8)
1. the control method of magnetic particle flaw detection current, it is characterized in that to be provided with according to the programmable logic controller (PLC) PLC of the controllable silicon trigger of magnetic powder inspection technological requirement establishment and corresponding with the needed magnetization flaw detection of detected workpiece direction number, each direction of magnetization all is provided with: PLC analog quantity input/output module, Hall current sensor, the phase shift trigger module, a pair of inverse parallel controllable silicon, the magnetization current output transformer is formed close loop control circuit, gather magnetization current information by Hall current sensor and be input to the analog quantity load module, through programmable logic controller (PLC) PLC program the magnetization current information and the setting value of gathering compared, output to the voltage of analog output module by difference control, through phase shift trigger module control inverse parallel thyristor operating angle, with the input circuit of control magnetization current output transformer, finish closed loop adjustment to magnetization current output transformer output current;
In the programmable logic controller (PLC) PLC, corresponding with the needed magnetization flaw detection of detected workpiece direction number, each direction of magnetization all is provided with the computer program that comprises magnetic history and demagnetization process, works out flow process according to the following steps:
Magnetic history:
The first step: given current setting value and magnetizing time setting value;
Second step: the output current setting value through peripheral analog output module D/A conversion, through phase shift trigger module control inverse parallel thyristor operating angle, makes the magnetization current output transformer export corresponding electric current again;
The 3rd step: read through analog quantity load module A/D conversion, export corresponding electric current by the magnetization current output transformer of Hall current sensor induction;
The 4th step: calculate the poor of current setting value and read value, with last current output value and the output of this result of calculation sum;
The 5th step: whether judgement time arrives the setting value of magnetizing time, if do not change for the 3rd step to the time, if the time to output one shutoff value, controllable silicon is turn-offed;
The demagnetization process:
The first step: given current setting value;
Second step: the output current setting value through analog output module D/A conversion, through phase shift trigger module control inverse parallel thyristor operating angle, makes the magnetization current output transformer export corresponding electric current again;
The 3rd step: read through analog quantity load module A/D conversion, export corresponding electric current by the magnetization current output transformer of Hall current sensor induction;
The 4th step: calculate the poor of current setting value and read value, with last current output value and the output of this result of calculation sum;
The 5th step: repeated for the 4th a period of time in step, to reach magnetized effect;
The 6th step: given setting demagnetization time value;
The 7th step: the output of successively decreasing, until setting the demagnetization time then, the output of successively decreasing also arrives zero, exports a shutoff value, and controllable silicon is turn-offed.
2. the control method of magnetic particle flaw detection current according to claim 1, it is characterized in that current setting value and time set value can be provided by two potentiometers respectively, the relevant analog quantity of potentiometer is delivered to programmable logic controller (PLC) PLC through analog quantity load module A/D conversion; Current setting value and time set value also can be provided by computing machine, and computing machine is connected with programmable logic controller (PLC) PLC.
3. the control method of magnetic particle flaw detection current according to claim 1 and 2, it is characterized in that being directed to the fluctuation of line voltage and cause output current fluctuation, be provided with the line voltage survey sensor, by tracking real-time regulated PLC internal parameter control to line voltage, the flaw detection size of current is write down in the real-time communication of coupled computer and PLC automatically, send warning message by computing machine, prompting operation person does respective handling to flaw detection workpiece or electrode etc. and does flaw detection again, realizes the intellectuality control of flaw detection electric current;
Its compensation of power network voltage method is:
In the program of magnetic history and demagnetization process, programmable logic controller (PLC) PLC reads and comes through analog quantity load module A/D conversion, when exporting corresponding current value by the magnetization current output transformer of Hall current sensor induction, read the line voltage value that the line voltage survey sensor comes, calculate the poor of the line voltage value of the stable normal value of line voltage with the line voltage survey sensor, this difference is joined among the programmable logic controller (PLC) PLC output valve.
4. according to the control device of the magnetic particle flaw detection current of the described method of claim 1 design, it is characterized in that including following hardware and constitute:
(1), is provided with the programmable logic controller (PLC) PLC of controllable silicon trigger;
(2), with corresponding PLC analog quantity input of the needed magnetization flaw detection of measured workpiece direction number and output module;
(3), with the corresponding Hall current sensor of the needed magnetization flaw detection direction number of measured workpiece;
(4), with the corresponding phase shift trigger module of the needed magnetization flaw detection direction number of measured workpiece;
(5), corresponding with the needed magnetization of measured workpiece flaw detection direction number, the synchrotrans of power supply are provided for the phase shift trigger module;
(6), with the corresponding magnetization current output transformer of the needed magnetization flaw detection direction number of measured workpiece;
(7), corresponding with the needed magnetization of measured workpiece flaw detection direction number, be a pair of inverse parallel controllable silicon of magnetization current output transformer power supply;
(8), the magnetization load of magnetization current output transformer output terminal;
The hardware annexation: the output of magnetization current output transformer connects Hall current sensor, the output of Hall current sensor connects the analog quantity load module, its A/D conversion output meets programmable logic controller (PLC) PLC, programmable logic controller (PLC) PLC output connects analog output module, its D/A conversion output connects the phase shift trigger module, the output of phase shift trigger module connects a pair of inverse parallel controllable silicon, the output of inverse parallel controllable silicon connects the input circuit of magnetization current output transformer, AC power meets programmable logic controller (PLC) PLC respectively, synchrotrans, the inverse parallel controllable silicon, the magnetization load is connected the output terminal of magnetization current output transformer.
5. according to the control device of the described magnetic particle flaw detection current of claim 4, it is characterized in that programmable logic controller (PLC) PLC is provided with three switching value input ends, insert magnetization, demagnetization, reset key switch respectively, be used to control its internal processes work; Be provided with a switching value output terminal, finish the break-make control to pilot relay, pilot relay is connected between the output terminal and inverse parallel silicon controlled control end of phase shift trigger module; A magnetic powder inspection magnetization current size setting potentiometer and a magnetic powder inspection magnetization current time set potentiometer are delivered to programmable logic controller (PLC) PLC through analog quantity load module A/D conversion respectively, are used to control the size setting and the setting of magnetic powder inspection magnetization current duration of magnetic powder inspection magnetization current; Between AC power and programmable logic controller (PLC) PLC, be provided with the line voltage survey sensor.
6. according to the control device of claim 4 or 5 described magnetic particle flaw detection currents, it is characterized in that being provided with computing machine and be connected, be used for real-time communication, write down magnetic powder inspection magnetization current size and deadly condition automatically and report to the police with programmable logic controller (PLC) PLC.
7. according to claim 4 or 5 or the control device of described magnetic particle flaw detection current, it is characterized in that described magnetization load is anchor clamps or coil, apply magnetic field in detected workpiece.
8. according to the control device of the described magnetic particle flaw detection current of claim 6, it is characterized in that described magnetization load is anchor clamps or coil, apply magnetic field in detected workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100947604A CN100424504C (en) | 2005-10-13 | 2005-10-13 | Magnetic particle flaw detection current control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100947604A CN100424504C (en) | 2005-10-13 | 2005-10-13 | Magnetic particle flaw detection current control method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766602A CN1766602A (en) | 2006-05-03 |
| CN100424504C true CN100424504C (en) | 2008-10-08 |
Family
ID=36742609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100947604A Expired - Fee Related CN100424504C (en) | 2005-10-13 | 2005-10-13 | Magnetic particle flaw detection current control method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100424504C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135669B (en) * | 2006-08-31 | 2010-05-12 | 黄新超 | Program controlled converter for charging type intelligent magnetic powder flaw detector |
| CN102023183B (en) * | 2009-09-15 | 2013-02-06 | 贵州黎阳航空动力有限公司 | Control method for AC magnetic particle inspection magnetization current peak and circuit for implementing same |
| CN108896651A (en) * | 2018-07-05 | 2018-11-27 | 烟台鲁宝钢管有限责任公司 | A kind of non-contact type Sectional magnetization, demagnetization overall-in-one control schema instrument and control method |
| CN110426948A (en) * | 2019-07-22 | 2019-11-08 | 江苏赛福探伤设备制造有限公司 | The method and device of the flaw detection control electric current of defectoscope magnetization and demagnetization |
| CN111595935B (en) * | 2020-05-13 | 2020-12-01 | 盐城工学院 | Thing networking magnetic particle inspection equipment |
| CN111965247A (en) * | 2020-08-17 | 2020-11-20 | 北京聚龙科技发展有限公司 | Flaw detection control device and method for Internet of things |
| CN115841905B (en) * | 2023-01-19 | 2023-11-21 | 济宁鲁科检测器材有限公司 | Phase compensation method of non-90-degree crossed magnetic yoke and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033513U (en) * | 1988-06-01 | 1989-03-01 | 王其荣 | Multi-function mini-detector of magnet force |
| US5668470A (en) * | 1995-03-16 | 1997-09-16 | Phase Metrics | Automatic testing system for magnetoresistive heads |
| CN2826426Y (en) * | 2005-10-13 | 2006-10-11 | 曾德文 | Magnetic particle inspection current control device |
-
2005
- 2005-10-13 CN CNB2005100947604A patent/CN100424504C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033513U (en) * | 1988-06-01 | 1989-03-01 | 王其荣 | Multi-function mini-detector of magnet force |
| US5668470A (en) * | 1995-03-16 | 1997-09-16 | Phase Metrics | Automatic testing system for magnetoresistive heads |
| CN2826426Y (en) * | 2005-10-13 | 2006-10-11 | 曾德文 | Magnetic particle inspection current control device |
Non-Patent Citations (2)
| Title |
|---|
| 新型磁粉探伤设备控制系统的研究与开发. 周原，孙晓，刘明山，潘刚毅.吉林大学学报，第33卷第1期. 2003 |
| 新型磁粉探伤设备控制系统的研究与开发. 周原，孙晓，刘明山，潘刚毅.吉林大学学报，第33卷第1期. 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1766602A (en) | 2006-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100424504C (en) | Magnetic particle flaw detection current control method and apparatus | |
| Ge et al. | Tracking control of a piezoceramic actuator | |
| CN101149405A (en) | AC spot-welding dynamic electric resistance real-time measuring device and method | |
| CN105158718A (en) | Fault indicator comprehensive testing method and testing system | |
| Sowmiya | Monitoring and control of a PLC based VFD fed three phase induction motor for powder compacting press machine | |
| CN106291407A (en) | A kind of transformator remanent magnetism detection, elimination integrated apparatus and using method thereof | |
| CN2826426Y (en) | Magnetic particle inspection current control device | |
| CN105652195A (en) | Molded case circuit breaker magnetic characteristic detection test apparatus and control method | |
| CN202171625U (en) | Current stabilization apparatus for AC temperature rise test | |
| Shaheed et al. | Design and implementation of a control system for a steel plate cutting production line using programmable logic controller. | |
| CN1333712A (en) | Process minitor for weld controller | |
| CN109116225A (en) | A kind of circuit breaker multichannel Durable test system | |
| CN102299518B (en) | A kind of three-phase alternating current compensation type voltage stabilizer | |
| CN104752016A (en) | Device and method for automatic magnetizing and demagnetizing of electromagnetic type residual current operated circuit-breaker | |
| CN101639495B (en) | Method for testing action current of solenoid valve | |
| CN104269864B (en) | Catalyst switching reactive-load compensation method based on response period forecasting | |
| CN111693924B (en) | System and method for detecting monitoring performance of voltage transformer on-line monitoring device | |
| Kowsalya et al. | PLC Based Critical Composition Control for Industries | |
| CN102879669A (en) | Failure current simulation device and working method thereof | |
| CN101274674B (en) | Constant-current contactless magnetizing packing method and apparatus for chain riveting | |
| CN206440815U (en) | Multidigit current transformer stage body | |
| Dume et al. | Hardware in the loop technique for real-time control of electrical machines using LabVIEW software for laboratory works in electrical engineering faculties | |
| Valadkhan et al. | Robust PI control of hysteretic systems | |
| CN102934179B (en) | Comprise the electromagnetic actuators of Position Control parts and use the method for this actuator | |
| CN108061833B (en) | Test instrument automatic detection system and method based on virtual test instrument interface module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Dongdian Testing Equipment Co., Ltd. Assignor: Zeng Dewen Contract record no.: 2011320000146 Denomination of invention: Magnetic particle flaw detection current control method and apparatus Granted publication date: 20081008 License type: Exclusive License Open date: 20060503 Record date: 20110303 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20111013 |